CN-224212785-U - Groove width gasket for electrolytic tank for chlor-alkali or alkyl water electrolysis

CN224212785UCN 224212785 UCN224212785 UCN 224212785UCN-224212785-U

Abstract

The utility model is suitable for the technical field of electrolytic tanks, in particular relates to a wide gasket for an electrolytic tank for chlor-alkali or alkyl water electrolysis, which comprises an anode gasket and a cathode gasket, wherein the anode gasket and the cathode gasket are symmetrically arranged on a sealing surface of a unit tank of the electrolytic tank, an ion membrane is arranged between the anode gasket and the cathode gasket, the wide gasket for the electrolytic tank for chlor-alkali or alkyl water electrolysis can ensure the elastic sealing performance of the sealing layer in contact with a flange surface, has better insulating property, can repair a cathode sealing layer or an anode sealing layer when damaged later, can directly contact with corrosive electrolyte, does not generate corrosion, and ensures that the shutdown effect cannot be generated due to the base plate in the operation process of the electrolytic tank.

Inventors

ZHANG HONGXIAO
TANG RONG
WANG BO

Assignees

兴迪新能(江苏)装备科技有限公司

Dates

Publication Date: 20260508
Application Date: 20250603

Claims (4)

1. The groove width gasket for the electrolytic tank for chlor-alkali or alkyl water electrolysis comprises an anode gasket (1) and a cathode gasket (2), wherein the anode gasket (1) and the cathode gasket (2) are symmetrically arranged on a sealing surface of a unit groove of the electrolytic tank, an ion membrane is arranged between the anode gasket (1) and the cathode gasket (2), and the groove width gasket is characterized in that: The cathode gasket (2) comprises a cathode gasket body (3), the cathode gasket body (3) comprises a cathode substrate (11), a waterline groove (5) is formed on one surface of the cathode substrate (11), waterline bulges (6) are uniformly distributed at the position of the waterline groove (5), a cathode coating layer (10) is coated on the position of one surface of the cathode substrate (11) where the waterline groove (5) is formed, a cathode sealing layer (12) is coated on the other surface of the cathode substrate (11), the coated cathode coating layer (10) forms an L shape, one end of the cathode coating layer (10) is propped against the cathode sealing layer (12) away from the flange surface, and the other side of the cathode coating layer (10) is propped against the side surface of the cathode gasket (2) vertical to the flange surface; the anode gasket (1) comprises an anode gasket body (7), the anode gasket body (7) comprises an anode substrate (14), an anode coating layer (13) is wrapped and covered on one surface of the anode substrate (14), an anode sealing layer (15) is wrapped and covered on the other surface of the anode substrate (14), the wrapped and covered anode coating layer (13) forms an L shape, one end of the anode coating layer (13) is abutted against the anode sealing layer (15) away from the flange surface, and the other side of the anode coating layer (13) is abutted against the side surface of the anode substrate (14) vertical to the flange surface.
2. The groove width gasket for an electrolytic tank for chlor-alkali or alkyl water electrolysis according to claim 1, wherein the anode substrate (14) of the anode gasket (1) is made of the same material as the cathode substrate (11) of the cathode gasket (2) and is made of polytetrafluoroethylene plate materials, the cathode sealing layer (12) and the anode sealing layer (15) are made of the same material and are ethylene propylene diene monomer rubber layers of rubber copolymers, and the cathode coating layer (10) is made of the same material as the anode coating layer (13) and is made of polytetrafluoroethylene layers.
3. The groove width gasket for the electrolytic tank for chlor-alkali or alkyl water electrolysis according to claim 1, wherein the surface of the cathode gasket body (3) is provided with a cathode mounting hole (4), and the surface of the anode gasket body (7) is provided with an anode mounting hole (8).
4. The groove width gasket for the electrolytic tank for chlor-alkali or alkyl water electrolysis according to claim 1, wherein right-angle toothed waterlines are formed between adjacent waterline bulges (6) which are uniformly distributed in the water groove (5), the tooth pitch of the right-angle toothed waterlines is 0.61mm, the waterline depth of the right-angle toothed waterlines is 0.40.6mm, the annular waterline bulges (9) formed on the surface of the anode gasket body (7) are also right-angle toothed waterlines, the tooth pitch of the right-angle toothed waterlines is 0.61mm, and the waterline depth of the right-angle toothed waterlines is 0.40.6mm.

Description

Groove width gasket for electrolytic tank for chlor-alkali or alkyl water electrolysis Technical Field The utility model belongs to the technical field of electrolytic tanks, and particularly relates to a wide gasket for an electrolytic tank for chlor-alkali or alkyl water electrolysis. Background The chlor-alkali industry is to produce chlorine (Cl 2), hydrogen (H 2) and sodium hydroxide (NaOH) by electrolyzing saturated saline solution (NaCl solution), the core equipment is an electrolytic tank, the alkyl water electrolysis industry is to prepare high-purity hydrogen (H 2) and oxygen (O 2), the electrolyte is alkaline solution (such as 20-30% KOH), the equipment for implementing the core of the process is also an electrolytic tank, and the electrolytic tank of the core equipment used by the chlor-alkali industry and the alkyl water electrolysis industry is an alkaline water electrolytic tank; The alkaline water electrolyzer is usually formed by connecting tens to hundreds of polar plates in series, insulation and sealing among the polar plates are key for ensuring the normal operation of the electrolyzer, and the sealing gasket is the core of reliable and efficient operation of the alkaline water electrolyzer; the sealing gaskets provided in the related art comprise an anode gasket and a cathode gasket, the anode gasket and the cathode gasket are combined and installed and fixed in a unit cell of the electrolytic cell, and meanwhile, an ion membrane is additionally arranged between the anode gasket and the cathode gasket and is used for distributing brine in the running electrolysis process of the electrolytic cell so as to complete the electrolysis operation of the electrolytic cell; The provided anode gasket and the cathode gasket both adopt ethylene propylene diene monomer rubber as gasket bodies, and the manufactured gasket can maintain insulation and sealing functions and increase strength at the same time, can be repeatedly compressed, has strong reusability, but has obvious problems, namely, the ethylene propylene diene monomer rubber material has poor corrosion resistance, if the sealing layer of the substrate leaks, electrolyte with stronger corrosiveness leaks to be in direct contact with the gasket substrate, so that the gasket substrate is corroded strongly, and the whole gasket is scrapped finally; in view of the above-described problems in the background art, the present utility model is directed to providing a wide gasket for an electrolytic cell for chlor-alkali or alkyl water electrolysis. Disclosure of Invention The utility model provides a groove width gasket of an electrolytic tank for electrolyzing chlor-alkali or alkyl water and a production method thereof, aiming at solving the problems that the substrate of the gasket proposed in the background art is easy to corrode and the electrolytic performance of the whole electrolytic tank is general. The utility model is realized by a wide gasket for an electrolytic tank for chlor-alkali or alkyl water electrolysis, comprising: The anode gasket and the cathode gasket are symmetrically arranged on the sealing surface of the cell groove of the electrolytic cell, and an ionic membrane is arranged between the anode gasket and the cathode gasket; The cathode gasket comprises a cathode gasket body, wherein the cathode gasket body comprises a cathode substrate, one side of the cathode substrate forms a water line groove, water line bulges are uniformly distributed at the position of the water line groove, a cathode coating layer is wrapped and covered on one side of the cathode substrate, and a cathode sealing layer is wrapped and covered on the other side of the cathode substrate; the anode gasket comprises an anode gasket body, the anode gasket body comprises an anode substrate, one surface of the anode substrate is wrapped and covered with an anode wrapping layer, the other surface of the anode substrate is wrapped and covered with an anode sealing layer, the wrapped and covered anode wrapping layer is L-shaped, one end of the anode wrapping layer is abutted against the anode sealing layer, which is away from the flange surface, and the other side of the anode wrapping layer is abutted against the side surface of the anode substrate, which is vertical to the flange surface. The manufacturing materials of the cathode substrate and the anode substrate of the anode gasket are the same as each other and are polytetrafluoroethylene plate materials, the manufacturing materials of the cathode sealing layer and the anode sealing layer are the same as each other and are ethylene propylene diene monomer rubber layers of rubber copolymers, and the manufacturing materials of the cathode coating layer and the anode coating layer are the same as each other and are polytetrafluoroethylene layers. As a further scheme of the utility model, the surface of the cathode gasket body is provided with a cathode mounting hole, and the surface of the anode gasket body i